John junkunc



Nov. 23 1926.

- J. JUNKUNC LOCK Filed Jan. 17. 1924 AME- Patented Nov. Z3, 1926.

JOI-IN JUNKUNC, OF CHICAGO, ILLINOIS.

LOCK.

Application filed January 17, 1924, serial No. ceases.

This invention relates to locks, more particularly those of the type inwhich a curved bolt is slidably connected to a barrel and is held inlocking position by mechanism within the barrel.

The principal objects of the invention are to improve, simplify andcheapen the construction of such locks.

Other and further important objects Vof this invention will be apparentfrom the disclosures in the drawings and accompanying specification.

` The invention (in a preferred form) is illustrated in the drawings andhereinafter ff more fully described.

On the drawings:

Figure 1 is a side elevation of a lock constructed in accordance withthe present invention.

Figure 2 is a central longitudinal section through the lock in closedposition.

Figure 3 is a view similar to Figure 2 showing the lock in openposition.

Figure 4 is a section on the line 4 4 of I- Figure 3.

Figure 5 is a section on the line 5-5 of Fig. 3.

Figure 6 is a side elevation of one of the parts.

As shown on the drawings:

The lock comprises a case hardened barrel or casing 10 having twoparallel cylindrical recesses 11 and 12 for the reception of the ends 14and 15 of the curved bolt 13. One of these ends 15 is formed with aportion 1G oia reduced diameter to enable a threaded pin 17 to beinserted opposite such reduced part to prevent complete withdrawal ofthe bolt while allowing the latter to rotate when in its extendedposition. Extending outwardly from this reduced part 16 is a attenedportion 18 adapted to allow the bolt to be slid into locking position.

In the recess 12 is arranged a spring 19 adapt-ed to move the bolt intounlocked position as soon as it is released.

The bolt is held in locked position by a pair of balls 2O adapted toenter recesses 2l in the ends of the bolt. These balls are held inengagement with these recesses by a re- .ciprocable member 22, the endof which is formed with two arcuate recesses 23 to allow such end topass between the balls as shown in Figure 2.

The member 22 is slidably arranged in a cylindrical recess 24. In thisrecess is arranged a sleeve 25 held in position by a set screw 26. Thisset screw is inserted from the recess 11 so that it can only be reachedwhen the lock is open. W'ithin this sleeve is the rotatable tumbler 27having a slot 28 for the reception of a key.

Around the inner end of the tumbler is a sleeve 29 having projections 30adapted to engage slots in the periphery of the member 22. Theseprojections arevflattened after the member 22 has been brought intoengagement so as to form a T-head which securely holds the partstogether.

The sleeve 29 is cut away longitudinally on opposite sides to receiveprojections 31 on thesleeve 25 so that while the sleeve 29 is free toreciproca-te it cannot rotate within the barrel 10.

Between the tumbler 27 and the sleeve 29 vis arrange-d a spring 32 whichtends-to force the latter, and the member 22 attached thereto, towardsthe balls 20. For moving the sleeve 29 in the opposite direction thissleeve is formed with oblique cam surfaces 33 adapted to be engaged bypins 34 on the tumbler 27 when the latter is rotated by its key.Shoulders on the sleeve 25 are provided to engage the pins 34 andthereby limit the range of movement of the tumbler.

To hold the balls more securely in locky ing position recesses 35 areprovided at the end of the recess 24.

I am aware that numerous details of construction may be varied through awide range without departing from the principles of this invention. andI thereforedo not purpose limiting the patent granted otherwise thannecessitated by the prior art.

I claim as my invention:

l. A; lock comprising a barrel, a curved bolt slidably connected theretohaving a re cess therein, a ball within said barrel adapted to entersaid recess when the bolt is in lock ing position, a member reciprocablewithin the barrel parallel to the bolt adapted to move behind the ballwhen the latter enters said recess to retain the ball in engagement withthe bolt, and means for reciprocating said member.

2. A lock comprising a barrel, a curved bolt slidably connected theretohaving a recess therein, a ball within said barrel adapted to enter saidrecess when the bolt is in locking position, a member reciprocablewithin the barrel parallel to the bolt adapted to move behind the ballwhen the latter enters said recess to retain the ball in engagement withthe bolt, a spring` for mov ing said member in one direction and keyoperated means for movingl it in the opposite direction.

8. A lool; comprising a barrel liavinorecesses therein adapted toreceive the enils 'ol-t a curved bolt, said ends ,having recessestherein, a pair of balls Within said barrel and between said ends,'adapted to enter the last -mentioned recesses, a member reciprocableWithin tlie barrel parallel to the bolt adapted to 'separate said ballsto retain the latter in engagement Witl'irthe ends of the bolt and meansfor reciproeatingsaid member.

4. A lock comprising a barrel having recesses therein adapted to*lreceive tlie .ends of a curved bolt, said ends;liavinhgrecesses therein,a pair of balls Witliin said barrel and between said ends adapted toenter the last mentioned recesses, a member recipre cable Within thebarrel parallel to tlie boli; adapted to separate saidloalls to retainthe if llatter in engagement with the ends 'of the bolt, a rotatabletumbler Withinsaid barrel,

vmember reeiprocable ivi having a recess extending therein parallel tothe flat sides of the barrel, a curved bolt.

apair 'of recesses parallel to the iirst recess entering the barrel fromthe opposite side and adapted tore'ceive the ends oi .said ,l ,1 7 '11.l -j rl-nl L t1.) 1h cinveevoo a pali oi a s arpicent Lic ner end of thelirst 'recess adapted to enter recesses in the ends el 'id cin-ved L toseparate tlieballs'to 'f engagement'witli'tlie ends 'of tlie bolt, arotatablei tumbler Within said first rece spring-for movingl saidm'ember in one tion, and aprojection on the tumbler adapt "ed to ergagea Camsnrlace "on'said member for movi-ngl tlielatter in tli'e oppositeldirection.

VNn testimony vwhereof have Llieron'iito subscribed my name.

Jo'iN somieres.

